Structure-Bioactivity Relationship of the Functionalized Polysulfone with Triethylphosphonium Pendant Groups: Perspective for Biomedical Applications.

Development of new biomaterials based on polysulfones tailored to act in various biomedical fields represents a promising strategy which provides an opportunity for enhancing the diagnosis, prevention, and treatment of specific illnesses. To meet these requirements, structural modification of the polysulfones is essential. In this context, for design of new materials with long-term stability, enhanced workability, compatibility with biological materials and good antimicrobial activity, the functionalization of chloromethylated polysulfones with triethylphosphonium pendant groups (PSFEtP+) was adopted. The surface chemistry analysis (Fourier transform infrared spectroscopy (FTIR), Energy-dispersive X-ray spectroscopy (EDX)), rheological properties, morphological aspects (Scanning electron microscopy (SEM), polarized light microscopy (POM)), and antimicrobial activity of the synthetized polysulfone were investigated to establish the relationship between its structure and properties, as an important indicator for targeted applications. Based on the obtained features, evaluated by the relationship between the rheological properties and microstructural aspects, and also the response at the biomaterial-bacteria interface, these qualities have been confirmed in their performance, in terms of thermal stability, antimicrobial activity, and also an increase in lifetime. Consequently, derived results constitute the preliminary basis for future tests concerning their functionality as gel matrices in biomedical devices.

Perfil antropométrico, composición corporal y somatotipo de jóvenes futbolistas brasileños de diferentes categorías y posiciones / Perfil antropométrico, composição corporal e somatotipo de jovens atletas de futebol brasileiros de diferentes categorías e posições / Anthropometric profile, body composition and somatotype of brazilian youth soccer players of different categories and positions

El objetivo de este estudio es identificar y describir las medidas antropométricas, composición corporal y somatotipo de futbolistas brasileños en varias categorías y posiciones de accionamiento en el campo. La muestra de este estudio está conformada por un grupo de 1.115 jugadores de fútbol masculino y divididos en ocho grupos: Sub 07 (n=60); Sub 09 (n=75); Sub 11 (n=140); Sub 13 (n=182); Sub 15 (n=184); Sub 17 (n=166); Sub 20 (n=144) y Profesionales (n=164). Se utilizó una estadística descriptiva (media ± desviación estándar) a través del SSPS y utlilizando v21 "One-way ANOVA" complementando la prueba "Bonferroni" de significância, considerando um valor p<0,05. Las variables antropométricas relacionados con la composición corporal: peso corporal, altura, porcentaje de grasa corporal, SDC (suma de los pliegues cutáneos), mostraron la evolución perfecta entre las categorías analizadas, lo que significa que existe una armonía en el proceso de evolución entre los grupos.

Objetivo: identificar e descrever as medidas antropométricas, de composição corporal e do somatotipo de jogadores brasileiros em diversas categorias e posições no campo. Método: a amostra consistiu em 1.115 jogadores de futebol do sexo masculino e divididos em oito grupos: Under 07(n = 60); Sub-09 (n = 75); Sub 11 (n = 140); Sub 13 (n = 182); Sub 15 (n =184); Sub 17 (n = 166); Sub-20 (n = 144) e Professional (n = 164). Estatística descritiva (média ± desvio padrão) foi utilizada através do SPSS, utilizandov21 “one-way ANOVA”, complementar “Bonferroni” significado, um teste considerando o valor de p <0,05. Resultado: as variáveis antropométricas relacionadas à composição corporal: massa corporal, estatura, percentual de gordura corporal, SDC (somatório das dobras cutâneas) mostraram a evolução perfeita entre as categorias analisadas. Conclusão: há harmonia no processo de evolução entre grupos.

Objective: To identify and describe the anthropometric measurements,body composition and somatotype of Brazilian players in various categories and positions in the field. Method: The sample consisted of 1,115 malesoccer players and divided into eight groups: Under 07 (n = 60); Sub-09(n = 75); Sub 11 (n = 140); Sub 13 (n = 182); Sub 15 (n = 184); Under 17(n = 166); U-20 (n = 144) and Professional (n = 164). Descriptive statistics(mean ± standard deviation) was used through SPSS, using v21 “one-wayANOVA”, complementary “Bonferroni” significance test considering thevalue of p <0.05. Results: Anthropometric variables related to body composition:body weight, height, body fat percentage, SDC (sum of skin folds)showed the perfect evolution of the categories analyzed. Conclusion: thereis harmony in the evolution process between groups.

Morphological aspects of osteomyelitis: a mini-review

A revision and up-to-date in bone infection is made. We point out the relevance of bacterial infections inthe etiology of this patology. The pathogenesis and forms of the infection were revised. Concerning theclinical presentation, a classification of these infections as to their evolution was addressed. In the diagnosis ofosteomyelitis the importance of radiographic aspects are stressed.